Im not sure on the syntax here, but i assume the question is (4/9)^-1
(4/9)^-1
= (4^-1)/(9^-1)
A negative power is an inverse of the positive power
i.e. x^-2 = 1/x^2
This is because if we have say x^3/x^5 we simplify it by cancelling x^3 which gives 1/x^2.
Another way to think of it is to subtract the power of the bottom x from the power of the top x: 3-5 = -2 so x^3/x^5 = x^-2.
I hope this explains how negitive powers are the inverse of the positive power.
So....
(4^-1)/(9^-1)
= 9/4
Because the inverse of 4 is 1/4 and the inverse of 1/9 is 9
Answer:
Step-by-step explanation:
Answer:
Step-by-step explanation:
cheese With toppings Total
No of pizzas sold 24 16 40
Eaten at work 12 10 22
Not eaten at work 12 6 18
a) Prob for a cheese pizza eaten at work=
b) Prob a pizza with either one or more toppings, and it was not eaten at work.=
c) Prob for a cheese pizza, or it was a pizza eaten at work.=P(cheese)+P(pizza eaten at work)-P(both)
=
City A cause city C- 3/4 is -1.5 then A is -.25 and 7/4 is 1.25 even though B is a positive number it would take less time to travel -.25 m
Answer:
The greatest common factor is 20
Step-by-step explanation:
Rewrite 40 as 20*2
Rewrite 60 as 20*3
=20*3m-20*2
Factor out common term 20;
20(3m-2)